Water Gear Pump Project

motor3 motor1 motor2

Next garage project on the docket. Picked up a gear pump and electric motor off of kijiji.

Max RPM of the motor is 1725.

Max RPM of the gear pump is 1800.

I cant find the actual specs for the pump but i did find the specs for a similar unit.

http://www.burcam.com/en/products?view=details&mainsection_id=200&section_id=90&cat_id=750&sku=700720

BRASS GEAR PUMP WITH STAINLESS STEEL SHAFT AND
GEARS. PUMPS WATER, BRINE, CALCIUM, DYES, SYRUPS, JUICE,
BEVERAGES, GAZ, FUEL, OIL, POULTRY WATERING ETC.
1/2" NPT SUCTION AND DISCHARGE.
MAXIMUM PUMP REVOLUTION SPEED: 1800 RPM
PULLEY RATIO CALCULATION:
MOTOR RPM X MOTOR PULLEY DIAM.
-------------------------------= PUMP PULLEY DIAM.
         PUMP RPM
OR
PUMP RPM X PUMP PULLEY DIAM.
---------------------------= MOTOR PULLEY DIAM.
       MOTOR RPM
CAPACITY:  FEET  PSI   RPM   HP     GPH
              0    0   900  1/3     300
                      1200  1/3     360
                      1800  1/3     600
             57   25   900  1/3     280
                      1200  1/3     330
                      1800  1/3     580
            115   50   900  1/3     240
                      1200  1/2     300
                      1800  1/2     480
            173   75   900  1/2     210
                      1200  3/4     275
                      1800  3/4     420
            231  100   900  3/4     160
                      1200  3/4     215
                      1800   1      330

So the question is, do I want my driven pulley to have torque or high rpm ?

Small drive pulley + large driven pulley = torque

Large drive pulley + small  driven pulley =high rpm

Even more info on gear pumps

http://www.omega.com/manuals/manualpdf/M1336.pdf

 

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